Fire door



- 2 Sheets-Sheet 1 May 5, 1931,. H. H. LANNING.

FIRE DOOR Filed July 3, 1'929 May 5, 1931. H. H. LANNING FIRE DOOR FiledJuly 5, 1929 2 Sheets-Sheet 2 l open position.

The outer end of the sand introducing conduit 59 is provided with aclosure member or cover 60 which is shown pivoted on a stud 61 securedto the outer wall of the door so as to permit the cover member 60 toswing upwardly into uncovering position; the lower end if the closuremember or cover being held in place by a keeper lug 62. The stud 61 isof length suHicient to also receive a clamp member or lever 63 which isscrewed thereon and by means of whiclrthe closure member or cover 60 maybe clamped into either closed or open position. The keeper lug 62 andclamp member 68 securely hold the cover 60 in place and prevent it beingblown away in the event of anexplosion. The closure member 60 normallyis in closed position. The opening 58 permits the introduction of sandinto the fire box during operation for the purpose of cleaning the firebox flues; the sand being usually introduced in comparatively smallquantities; the sand being caused to flow into the fire box by the draftof the locomotive which carries the sand rapidly through the fines andcuts away the soot', corrosion, etc. encountered in oil burninglocomotives.

The lower side or bottom of the fire door 49 is shown slightly flaredlaterally and the bottom of the chamber therein left open to effectcommunication at 64 with the upper open end of the hollow member or airconveying conduit 65. The conduit in the construction shown, by reasonof the type of fire box door employed, is provided with a rear wall 66in addition to the front and side walls.

The air conveying member or conduit is shown firmly secured to lugs 67on the fire door frame 46 by means of bolts which pass through aperturedlugs 68 formed on opposite sides of the conduit, as shown in Fig ures land 3.

The low-er end of the conduit 65 is provided with a closure member ordamper 69. The damper 69, at one end, has an extension 70 terminating inan apertured bifurcation 71 to receive the lower end of operating lever72 therebetween and which is pivotally secured thereto by a suitable pin73.

The damper 69 is hingedly secured to the conduit 65 as indicated at 74,7 4, to permit the damper to be swung downwardly into The position ofthe damper is controlled by reciprocatory or up-and-down mov-ement ofthe lever 72, which is provided with a longitudinal slot 75 throughwhich a stud 76 extends; the latter being secured at one end in a lug 77which may be formed integral with the side of portion 65. The outer endof stud 7 6 is provided with a clamp member or lever 78 whereby theoperating lever 7 2 is firmly clamped its adjusted positions andconsequently damper 69 also held in its closed and adjusted positions.

Before the fire door 49 is bolted into place in the normal closedposition shown in Figure 2, a deflector 7 9 is put into place. Thisdeiector is formed to extend or slope downwardly through the ire dooropening in the back head as more clearly shown in Figure 2. Thedefiector is preferably of the arcuate formation shown and is providedat opposite sides withlugs 80, 80, which lit into recesses 81 formed inthe door frame 46. The top of the deflector 79 is also provided with aange 82 which fits into the recessed portion of the flange 48 of thedoor frame or ring 46 and consequently is firmly held in place by thedoor 49 which in an oil burning type of locomotive normally remainsclosed.

The deflector 79 overhangs the opening 57 in the rear wall of the firedoor and therefore directs lthe iniowing air downwardly toward the firein the fire box. The deflector, during operation, becomes heated and byreason of its shape and position the inlowing air is caused to come intocontact with it and the air thereby heated as it passes into the firebox.

The inner end of the deiiector or air direct-ing member 79 is shownprovided with a series of holes 83. These holes permit air to passtherethrough, which not only aids combustion and prevents unequaltemperatures in the fire box door flange 44; but also tends to protectthe deflector from overheating.

In order t0 enable the engine crew or firemen to observe the conditionof the fire, the cover 60 for the sand introducing opening 58 isprovided with a peep hole 84; and the cover 60 is shown also providedwith a lug 85 which enables easy operation of the sand hole cover aboutits pivot Vpoint 61, after the clamp member or lever 63 has beenloosened.

The air conveying member or conduit 65 is made to extend down throughthe firing deck or cab floor 17 of the locomotive so that the damper andtherefore the air inlet end are located beneath the deck.

With my improved structure, air in desired amounts may be admitted intothe fire box by forcing lever 72 downwardly (after releasing clampmember 78) thereby forcing damper 69 into open position to an extentsuicient to admit the desired quantity of air necessary to effect therequired combus tion, without the necessity of opening the fire door orsand hole cover.

My improved device provides means whereby the amount of admitted air maybe controlled or regulated, as the damper may be held in either itsclosed or adjusted positions by screwing the lever 78 into clamp-l ingrelation with the operating lever 72; the slot 75 in the operating lever72 being of length sucint `to permit the @apparte be ployed, does notaord relief and is frequently blown loose from its fastening, seriousinjury and loss of life.

When it is necessary to enter the lire box,

causing this may be accomplished by removing nut- 55 from stud 54 whichallows the lire door 49 to be swung on its hinge-pin 51.

I have shown my invention applied to a certain type of locomotive firebox at present in use, but it will be understood that the invention isapplicable to other types with slight variations in contour to suit theform of iire box door i'langing; and while the exemplilication isbelieved to be the best adaptation, which has been described in termsemployed for description and not as terms of limitation, modilicationsmay be made without, however, departing from the spirit of my invention.

What I claim is:

1. A irebox having a re door opening, a ring secured about said openingand provided with recesses in its upper outer face, a chambered firedoor mounted on said ring, the chamber of the door having openings atthe bottom and at the rear of the door, the door having a sandintroducing channel disposed transversely therethrough and communicatingwith the fire door opening, a closure for said channel, an airdeiiecting member disposed about the upper side of the opening in therear wall of the door and extending into the fire door opening, saiddeiiecting member being flanged at its outer end and said liangesseating in the ring recesses and held in place by the rear wall of theiire door, a hollow open ended member secured to the ring with one endcommunicating with the opening in the bottom of the door while the otherend is disposed beneath the 'firebox deck and constitutes the air inlet,adjustable means for controlling said air inlet, and v means wherebysaid adjustable means may be controlled and locked in adjustedpositions.

2. A tire box provided with a fire door opening, a ring secured to thelire box about said opening, a hollow lire door secured to said ring andprovided with a chamber extending throughout the door and open at thebottom of the door below the iire door opening in the fire box, a sandintroducing walls of the door and open at its ends, the door having anopening in its rear wall disposed across the top and sides of saidconduit for establishing communication between the chamber of the doorand the lire box opening, an open ended hollow air conveying membersecured at its upper end to said ring with the upper end fitting theopen bottom of the iire door while the other end is disposed beneath thefiring deck of the fire box, and Vregulable closure means hingedlysecured to the lower end of said member for regulating the air admittedinto said member and the fire door.

3. A iirebox provided with a fire door opening, a ring secured aboutsaid opening, a hollow tire door mounted on said ring and provided witha sand introducing conduit Whose ends are integral with the front andrear walls of theiire door, the rear wall of the door having an openingdisposed across the top of said conduit and communicating with said dooropening, the bottom of the door being open, an open-ended air conveyingchamber of substantially the same width as the open bottom of the doorsecured to the ring with its upper end abutting the open bottom of thedoor, `while the opposite end of the member is disposed beneath thetiring deck of the irebox and constitutes the air inlet, a damperhingedly secured to saidV member for controlling said inlet, and avlever pivotally secured at its lower end to the damper andreciprocatingly secured vto said member for regulating said damper andfor holding the same in adjusted positions.

et. A rebox having a fire door opening, a ring secured about saidopening, a chambered fire door mounted on the ring, the chamber of thedoor being open at the bottom of the door and having an opening in therear wall communicating with the iire door opening in the fire box, openended air conveying means disposed throughout the width of the fire doorand secured about the opening in the bottom of the door, said meansbeing arranged vertically and extending downwardly beneath the tiringdeck of the firebox, regulable closure means secured to the bottom ofthe air conveying means for controlling the air admitted through thebottom open end thereof, and a lever reciprocatingly mounted on said airconveying means whereby the closure means is controlled. HOTVVARD H.LANN ING.

conduit integral with the front and rear

